cheap headlights and tail lights?
 

Hi all-
I'm getting some spares for a race car, in case it gets into a crash, so we can keep racing. Two of those items are head and tail lights

I dont care how good the light projection is, but I do want them to be reliable. IE: Turn on, seal, etc.

Anyone have a good amazon/ebay type pair they'd suggest? Hopefully, we will never use them.

VLands are probably the cheapest decent aftermarket (heads and tails).
For headlights, used non HID 2016- are also pretty cheap (probably cheaper than any aftermarket). Since you're just stockpiling them you can sit on eBay for a few weeks and pick ones that match your budget. It's the HID (or 2017+ LED) headlights that are very expensive new and still expensive used.
Not sure about tailights, but might be that used would be cheapest for this as well.